Yanmar 4LHA-HTP Operation Manual page 609

Chapter 7 Reduction and Reversing Gear
5. Reassembly
f. Make note of the reading. The bearing clearance mea-
sured PLUS the preload required is equal to the amount of
shim thickness to be ADDED.
Example:
Bearing Clearances Measured
+ Bearing Preload Required
= Shims to Be Added
g. Remove dial indicator, special bolt and nut, and reinstall
hex plug. Tighten securely.
OUTPUT SHAFT PRELOAD
37. Measure the bearing clearance as follows:
a. Install flange washer and bolt. Tighten snuggly.
b. Mount dial indicator on bolt head. Turn output shaft
several times to ensure bearing is seated.
a - Flange Washer and Bolt
c. Zero dial indicator.
0.007 in.
0.004 in.
0.011 in.
7-2-35
4LHA Serie: